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5170782 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5170782: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, thread_class: 2B, thread_series: UN, overall_height: 1.000 INCHES NOMINAL IN, locking_feature: FREE-RUNNING ALL METAL DESIGN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-433-1507, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
5170782
NSN: 5340-00-433-1507
NIINs: 004331507, 005170782
FSC: 5340 — Hardware, Commercial
CAGE: 00501 — NEW HOLLAND N.V.NC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
thread_class2B
thread_seriesUN
overall_height1.000 INCHES NOMINAL IN
locking_featureFREE-RUNNING ALL METAL DESIGN
thread_directionRIGHT-HAND
washer_thickness0.250 INCHES NOMINAL IN
surface_treatmentPHOSPHATE OVERALL
width_across_flats3.000 INCHES NOMINAL IN
nominal_thread_size2.250 INCHES IN
washer_outside_diameter4.000 INCHES NOMINAL IN
NSN5340-00-433-1507
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5170782 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESBRASS OR NICKEL SILVER
SUBSTITUTES & CROSS-REFERENCES 2
9849254Reference document
Same NSN cross-reference
Reference document — Secondary reference
C5NN11603BReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5170782?
5170782 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace 5170782?
There are 2 known substitutes for 5170782: 9849254, C5NN11603B. Substitute compatibility should be verified for your specific system.
What is the NSN for 5170782?
5170782 is cataloged in the U.S. Government catalog under NSN 5340-00-433-1507. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.